Smelting furnace



Das. 9 1924.

C. GAUSCHEMANN SMELTING FURNACE Filed Aug. 24, 1920 zsheets-sheet 1 Dee. 9. 19211. y 1,518,193

C. GAUSCHEMANN SMELTING FURNACE Filed Aug. 24. 1920 2 shams-sheet 2 I?? 06min.-

Patented Dec. 9, 1924.

UNITED STATT-Si CARLGAUSCHEMANN, F FRANKFORT-ONl-THE-MIN, GERMANY.

SMELTING FUENACE.

Application led August 24, 1920.`

To all l1/2,0m t may concern Be it known that I, CARL GAUSCHEMANN, a citizen of the German Empire, residing` at Frankfort-on-the-Main, Germany, have invented certain new and useful Improvements in Smelting Furnaces (for which I have filed applications in Germany, September 9, 1915,Pat. No. 295,739, and Febr. 11, 1917, Pat. No. 301,010; Sweden, June 20, 1920; Denmark, June 29, 1920; Norway, .I une 29, 1920, Pat. No. 32,9611; France, July 2, 1920, Pat. No. 518,721; England, July 9,

1920, Pat. No. 147,952; Hungary, July 10, 1920, Pat. No. 80,690; Italy, July` 1, 1920, Pat. No. 291/282; Belgium, July 7, 1920,

Pat. No. 288,807), of which the following is a specification.

My invention refers to furnaces and more especially to a portable furnace adapted for use in smelting easily fusible metals.

In the furnace according to the present invent-ion easily fusible metals such as lead or tin can be recuperated from waste materials or sweepings by melting in a continuous operation and the furnace can be permanently charged afresh while in action as Well as also be discharged of the material melted out.

In the drawings affixed to this specification and forming part thereof two modifications of a furnace embodying my invention are illustrated by way of example. In the drawings:

Figs. 1 and 2 are longitudinal sections at right angles with `one another, and

Fig. 3 is a horizontal section of the one modification, whilst Figs. l and 5 are longitudinal sections at right angles with one another and Fig. (i the pertinent horizontal section of the second modification.

In all the figures 1 is the mantle of the furnace consisting of four plates fastened together by screws. It is closed at-the top by a cover plate 2 provided with a flue connection for the smoke and the waste gases. rIhe firebox l proper is lined with masonry. 5 is the grate and 6 is the ash-pan. rIhe melting-pan 7 is arranged above the 'firebox 11 and hung in special brackets on the wall of the furnace or fastened in some other suitable manner. At its lowest point the melting-pan illustrated in Figs. 1 to 3, is provided with a discharging hole, prefer- Serial No. 405,770.

ably covered with a grate 8, a drain 9 leading towards the exterior being connected to it. The melting pan 7 does not extend right to the back wall of the furnace, but leaves a flue `channel open there which is covered by a defiecting arch 10. The melting pan is further provided with lateral recesses or passages 11 for the heating gases which are led upwards through special channels 12. Above these channels defiecting hoods 13 are provided, the said hoods protecting the channels from being blocked up or dislocated by the raw material charged into` the melting pan. The melting pan might however, also touch the back wall of the Vfurnace in which event additional supports for` the pan would be provided and the rear flue channel would be `formed by' a recess or an opening in the `front wall of the furnace is provided with the cooling door 14C aswell as a door 15 lfor discharging or removing the slags, said door being fitted with an upright grate 16, on a level with kthe melting pan 7, and furthermore, above these doors, with a door 17 for purposes of observation. The cover plate 2 has a flap 18 through which the material to be smeltedis charged into the furnace.

The drain 9 projects a little over the wall of the furnace, so as to allow a Crucible or the like to be placed beneath it in order to receive the smelted metal. The working of the furnace is continuous, and not subject to interruptions of any kind either during charging or whilst tapping o the slags.

The operation of the furnace is as follows:

After starting the fire in the fire-box, the melting-pan 7 is charged with raw materia-l through the flap 18. The heating gases are caused to sweep over the melting-pan and owing to the provision of the flue-channels, to pass through the material heaped up upon it. By this means the easilyA fusible `metal melts and flows downwards and outwards through the drain 9 into a Crucible placed underneath. rFhe smelting process can be watchedA through the door 17, which pan from above and an opening, adapted to be closed, in said mantle in front of said pan.

6. ln a device of the kind described in combination, a furnace mantle, a melting pan surrounded by said mantle, the bottom of said pan slanting from the sides towards the centre, a drain integral with said pan being directly connected to said bottom and projecting through said mantle, said pan being adapted to be tilted about the point of contact between said drain and said mantle, an axle being laid across said mantle, means for suspending said pan from said axle, means for oscillating said axle from outside, means for conducting heating gases towards and past said pan, means for char ing said pan from above and an opening, adapted to be closed in said mantle, in front of said pan.

7. In a device of the kind described in combination, a furnace mantle, a melting pan surrounded by said mantle and inclined towards the rear, means for tilting said pan from outside, a small aperture in the front Wall of said pan, a drain integral with said pan in front of said aperture and projecting through said mantle, means for conducting heating gases towards and past said pan, means for charging said pan from above and an opening adapted to be closed, in said mantle in front of said pan.

In testimony whereof I aiX mv signature.

CARL GAUS CHEMANN. 

